Review a prior discussion at https://discussions.apple.com/thread/2728874
I have a MAC desktop. It now has OS X Yosemite.
When I get an updated or changed e-mail address, I go to address book and delete the old e-mail address, then enter the new e-mai address and hit save.
Yet both e-mail addresses show up on the drop down list when I enter the 1st letter of the name into the TO:
With so many e-mail address changes lately, I get confused as to which one is the latest and most current one to use.
If anyone can answer this question for me, I would be most grateful.